Arpège information

Run by: Meteo France

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Resolution 0.1° x 0.1° (Europe)

ARPEGE uses a set of primitive equations with a triangular spectral truncation on the horizontal, with a variable horizontal resolution, with a
finite elements representation on the vertical and a “sigma-pressure” hybrid vertical coordinate.
It also utilizes a temporal two time level semi-implicit semi-lagrangian scheme. The horizontal resolution of the ARPEGE model is around 7.5km over
France and 37km over the Antipodes. It has 105 vertical levels, with the first level at 10m above the surface and an upper level at around 70km. Its time step is of 360 seconds.

Model information from the National Centre for Meteorological Research